This article examines the microphone and its connective political and nonhuman ecologies. A media archaeological excavation of Leon Theremin’s role in the development of a specific bugging device (“The Thing”) facilitates discussion throughout. Situating the microphone within a networked history of power relations and ethical consequences, the author draws upon contexts of surveillance, parasites and horror in order to ask whether microphones are agential actors and, if so, what the consequences might be.